package work20241206_chap7.f;

/**
 * @author zdl
 * @date 2024/12/6
 */
abstract class MyAbstractClass{
    public  abstract void m1(); //1
    abstract protected void m2(); //2

}
class MySubClass extends MyAbstractClass{
   public void m1(){} //3
    protected void m2(){} //4



    }


